Hairbag-
Do a search for "seat belts" and you'll pull up some great threads on your options and install photos.
I concur with fellow stovebolters that argue this is one area where it is worth spending the $$ to get a new set, rather than salvaging rotten belts from a '72 Monaco in the boneyard. Safety for you and your loved ones is worth the investment.
I just bought a set from Gem Street Rods.com for my '54 GMC. Good quality, helpful folks, lower prices than Juliano's. Set of two shoulder 3 points and one lap belt in between cast me ~$150. Keep us posted on your progress and I will try to post when I get mine in place.
